@Walkaround
“changes to the menstrual cycle itself themselves, like a heavy period, are not an indicator of changes to fertility” *@speckledostrichegg - you are failing to understand an obvious point - the body’s reaction to a vaccine can affect ovulation, which is required for fertility. Yes, this is likely to be a very temporary state of affairs, but* the AZ vaccine is known to provoke a very odd autoimmune response that was unexpected and is not fully understood, so it is not silly of women to worry if their periods are delayed, cease altogether for a few months, or their cycle becomes irregular, because it is a lie to say that this is never a sign of depressed fertility.
i'm really not failing to understand
Ovulation and menstruation are not the same thing. Changes to menstruation or the menstrual cycle do not automatically mean changes to ovulation.
The only autoimmune link to AZ is a CVST, a blood clot in the brain, which does not affect ovulation. You can't extrapolate this to to say AZ is associated with "odd autoimmune responses" that may affect fertility.
Vaccines in general do not inhibit ovulation, although it is true that a fever can in some cases. But again, a fever itself would not necessarily cause menstrual changes, and it is not something women routinely worry about if they have a cold/flu/stomach bug one month it may have prevented them from ovulating.
Current medical advice is that you can go ahead with vaccination even if going through procedures like ovulation induction and egg freezing -see below.
www.bmj.com/content/372/bmj.n509
The guidance refutes any link between the vaccines and fertility. “There is absolutely no evidence, and no theoretical reason, that any of the vaccines can affect the fertility of women or men,” it says. People of reproductive age should get a covid-19 vaccine when they receive their invitation, including people who are trying to have a baby or thinking about having a baby in the future, the guidance says.
People undergoing fertility treatment (in vitro fertilisation (IVF), frozen embryo transfer, egg freezing, ovulation induction, intrauterine insemination, or using donated gametes) can be vaccinated during treatment, but may wish to consider the timing given the potential side effects in the few days after vaccination. “It may be sensible to separate the date of vaccination by a few days from some treatment procedures (for example, egg collection in IVF), so that any symptoms, such as fever, might be attributed correctly to the vaccine or the treatment procedure,” says the guidance.
People may start their fertility treatment immediately after being vaccinated, unless they wish to have a second dose before pregnancy, it adds.
The guidance also states that those who are donating their eggs or sperm for the use of others can still have a covid-19 vaccine.